Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Cathode_ray on November 19, 2014, 05:28:21 pm

Title: 6V6 Plexi buzz
Post by: Cathode_ray on November 19, 2014, 05:28:21 pm

Built a 6V6 Plexi (actually an "October" build) and have been very pleased with it. Added the "Hot Switch" mod and this is cool as well - but the gain is a bit much for my taste. I'll work on controlling this later.
My issue is the overdrive is a bit buzzy at low levels. Anyone else encounter this,  and perhaps recommend a solution?

Title: Re: 6V6 Plexi buzz
Post by: PRR on November 19, 2014, 09:21:05 pm

Looks like a filter-cap can (buzzy DC) directly behind the V pots?

Title: Re: 6V6 Plexi buzz
Post by: Cathode_ray on November 20, 2014, 10:39:06 am

Not hum/buzz but the break-up has a buzzy quality. For example with master vol. low and pre vol turned up.  This seems common to preamp distortion schemes but I've heard amps without the "issue".
At high levels all is great!